heloo
<form action="/shop/test10">
    
</form>
<a href="/shop/test10">333</a>
<?php
/**
 * Created by Vincent ZHANG.
 * Date: 2018-04-16 0016
 * Time: 17:45
 * Description:
 */
echo APPPATH."<br>";
echo base_url()."<br>";
echo site_url('shop/test5');